ループ型並列熱サイフォンの蒸発部および凝縮部壁面温度分布

概要

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A looped parallel thermosyphon is newly developed to improve heat transfer defects of a conventionalthennosyphon. A looped parallel thermosyphon consisted of parallel installed two conventional thermosyphonsconnected by two U tubes. A conventional single tube type thermosyphon was also tested to compare heattransfer characteristics with the new type. Water and ethanol were used as the working ﬂuid. Experiments werecarried out with three diﬁerent cooling temperatures, 25, 37.5, and 50 ° C and two charge ratios, 0.5 and 0.9.The purpose of this study is to clarify the uniformity about the wall temperature distributions of evaporator andcondenser.The following ﬁnding is obtained. The wall temperature distribution at the evaporator section of the loopedparallel thermosyphon was more uniform than that of the conventional thermosyphon.